.top{
    width: 100%;
    height: 100px;
    background-color: #ffffff;
}
.top-c{
    width: 1200px;
    height: 100%;
    margin: 0 auto;
    overflow: hidden;
   
}
.top-img{
    float: left;
    margin-top: 24px;
}
.top-nav{
    width: fit-content;
    height: 100px;
    float: right;
}
.top-nav-t1{
    float: left;
    margin: 45px 0 0 77px;
    text-align: center;
    position: relative;
}
.top-c .top-left{
    display: block;
    width: 36px;
    height: 16px;
    line-height: 16px;
    font-size: 14px;
    color: #767676;   
}
.top-c .top-left:hover{
    font-size: 18px;
    color: #668aca;
}
.top-left span{
    display: block;
    width: 20px;
    height: 1px;
    margin: 10px auto 0;
    background-color: #668aca;
    opacity: 0;
}
.top-nav-t1:hover span{
    opacity: 1;
}
.top-left.active span{
    display: block;
    width: 20px;
    height: 1px;
    margin: 10px auto 0;
    background-color: #668aca;
    opacity: 1;
}
.top-c .top-left.active{
    font-size: 18px;
    color: #668aca;
}
